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    Question

    12, 23, 68, 271, 1354, ?

    A 8123 Correct Answer Incorrect Answer
    B 8223 Correct Answer Incorrect Answer
    C 8133 Correct Answer Incorrect Answer
    D 8023 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    12 × 2 - 1 = 23 23 × 3 - 1 = 68 68 × 4 - 1 = 271 271 × 5 - 1 = 1354 1354 × 6 - 1 = 8123

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